130815287 has 4 divisors (see below), whose sum is σ = 131376960. Its totient is φ = 130253616.

The previous prime is 130815271. The next prime is 130815337. The reversal of 130815287 is 782518031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782518031 = 2381 ⋅328651.

It is a cyclic number.

It is not a de Polignac number, because 130815287 - 2⁴ = 130815271 is a prime.

It is a super-2 number, since 2×130815287² = 34225278625784738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130815887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280487 + ... + 280952.

It is an arithmetic number, because the mean of its divisors is an integer number (32844240).

Almost surely, 2^130815287 is an apocalyptic number.

130815287 is a deficient number, since it is larger than the sum of its proper divisors (561673).

130815287 is an equidigital number, since it uses as much as digits as its factorization.

130815287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561672.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 130815287 is about 11437.4510709336. The cubic root of 130815287 is about 507.6364902604.

The spelling of 130815287 in words is "one hundred thirty million, eight hundred fifteen thousand, two hundred eighty-seven".